(19)

(11)

EP 0 473 726 A1

(12)

(43) Date of publication: 11.03.1992 Bulletin 1992/11 (21) Application number: 90909978.0 (22) Date of filing: 18.05.1990

(51) International Patent Classification (IPC):  B29C 45/ 00( . ) C08L 23/ 06( . ) C08L 3/ 02( . ) (86) International application number: PCT/US1990/002897 (87) International publication number: WO 1990/014388 (29.11.1990 Gazette 1990/27)

(84) Designated Contracting States: AT BE CH DE DK ES FR GB IT LI LU NL SE (30) Priority: 19.05.1989 US 19890354412 (71) Applicant: AGRI-TECH INDUSTRIES, INC. Champaign, IL 61821 (US)	(72) Inventors: WOOL, Richard, P. Urbana, IL 61801 (US) OELSCHLAEGER, Peter Decatur, IL 62525 (US) WILLETT, Julios Sidney, IL 61877 (US) (74) Representative: Spencer, Graham Easdale, et al  A.A. Thornton & CO Northumberland House 303-306, High Holborn London WC1V 7LE London WC1V 7LE (GB)